EPA Air · by county
Air-emissions sources in Undetermined County, Colorado
- 1,500Facilities
Every stationary source in Undetermined County, Colorado that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
By emissions classification in Undetermined County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Undetermined County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 — inspections 6
- 2025 — inspections 29
- 2024 — inspections 26
- 2023 — inspections 25
- 2022 — inspections 38
- 2021 — inspections 15
- 2020 — inspections 23
- 2019 — inspections 5
- 2018 — inspections 22
- 2017 — inspections 25
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| EVERGREEN NATURAL RESOURCES - PORTABLE E | Minor source | No |
| EVERGREEN NATURAL RESOURCES - ROBINSON | Minor source | No |
| EVERGREEN NATURAL RESOURCES - ROBINSON | Minor source | No |
| EVERGREEN NATURAL RESOURCES - RULLESTAD | Minor source | No |
| EVERGREEN NATURAL RESOURCES - SHERRY 12 | Minor source | No |
| EVERGREEN NATURAL RESOURCES - SOLAR CRES | Minor source | No |
| EVERGREEN NATURAL RESOURCES - THOROUGHMA | Minor source | No |
| EVERGREEN NATURAL RESOURCES - WARREN 23 | Minor source | No |
| EVERGREEN OPERATING CORPORATION | Minor source | No |
| EVERGREEN OPERATING CORPORATION | Minor source | No |
| EVERIST MATERIALS - CUMMINS G040665238 | Minor source | No |
| EVERIST MATERIALS, LLC | Minor source | No |
| EVERIST MATERIALS, LLC | Minor source | No |
| EXCEL READY MIX | Minor source | No |
| FERTECH ENVIRONMENTAL INC | Minor source | No |
| FHE US - PORTABLE SAND BLASTING | Minor source | No |
| FLAG RESOURCES, INC | Minor source | No |
| FLAG RESOURCES, INC-PORT GENERATOR | Minor source | No |
| FLANAGAN READY MIX LTD | Minor source | No |
| FLANAGAN READY MIX LTD | Synthetic minor source | No |
| FLATIRON DRAGADOS- DEN NORTH BATCH PLANT | Minor source | No |
| FLINTSTONE GRAVEL & TRUCKING - FLINTSTON | Minor source | No |
| FLUID COMPRESSOR PARTNERS - PORTABLE COM | Minor source | No |
| FOSSIL FUEL ENERGY SERVICES | Minor source | No |
| FOUNTAINHEAD RES-EMERSON FARMS #21-29 | Minor source | No |
| FOUR STATES AGGREGATES LLC | Minor source | No |
| FREEDOM ENERGY INC | Synthetic minor source | No |
| FREMONT COUNTY - PORT SCREEN | Minor source | No |
| FREMONT PAVING COMPANY | Minor source | No |
| FRONT RANGE AGGREGATES - SCREEN | Synthetic minor source | No |
| FRONTIER PAVING INC. (CEDARAPIDS ABP) | Synthetic minor source | No |
| G.M. STEWART CORP - PORT ROCK CRUSHER | Minor source | No |
| G.M. STEWART CORP- PORTABLE AGG SCREENER | Minor source | No |
| GARY RINDERLE CONSTRUCTION, INC. | Minor source | No |
| GE ENERGY RENTALS | Minor source | No |
| GEARS INC - PORTABLE CBP | Minor source | No |
| GEM MOBILE - PORT THERMAL OXIDIZER | Synthetic minor source | No |
| GEM MOBILE - PORT VAPOR COMBUSTORS | Synthetic minor source | No |
| GENERAL OPERATING CO (KOLBERG 271B SCR) | Minor source | No |
| GLACIER ROCK CO. - PORTABLE CEC SCREEN | Minor source | No |
| GOLDEN CONCRETE LLLP (TELESMITH JAW) | Synthetic minor source | No |
| GOLDEN CONCRETE LLLP (VINCE HAGAN CBP) | Minor source | No |
| GOLDEN CONCRETE LLLP DBA AGGREGATE IND | Synthetic minor source | No |
| GOLDEN CONCRETE, LLP (UNIVERSAL SCREEN) | Minor source | No |
| GOLDENS CONCRETE CO | Minor source | No |
| GOSNEY & SONS | Minor source | No |
| GOSNEY & SONS INC. (CRUSHER PLANT) | Minor source | No |
| GOULD CONST - NORDBERG CUSHER, M309 | Minor source | No |
| GOULD CONST. INC - PORTABLE CRUSHR/SCRN | Minor source | No |
| GOULD CONSTRUCTION INC. | Minor source | No |
| GRAND CNTY ROAD & BRIDGE DEPT | Minor source | No |
| GRAND COUNTY R&B - PORT CRUSHERS/GEN | Minor source | No |
| GRAND COUNTY ROAD - FINLAY SCREEN PLANT | Minor source | No |
| GRAND GRAVEL | Minor source | No |
| GRAND JUNCTION PIPE & SUPPLY CO | Minor source | No |
| GRANITE CONSTRUCTION COMPANY | Minor source | No |
| GRUVER REDI-MIX | Minor source | No |
| GUNNISON ENERGY CORP- PORTABLE FORD ICE | Minor source | No |
| HALL IRWIN CONST CO - CRUSHER #1 SN:4777 | Minor source | No |
| HALL IRWIN CONST CO - PORT CRUSHER | Minor source | No |
| HALL IRWIN CONST CO - SPEC PROD SCREENIN | Minor source | No |
| HALL IRWIN CORP - MILLIKEN WASH PLANT | Minor source | No |
| HALL-IRWIN CORP - PORTABLE BLENDING UNIT | Minor source | No |
| HALL-IRWIN CORPORATION | Minor source | No |
| HAMMERSON CORP - PORTABLE COMCRETE BATCH | Minor source | No |
| HARTMAN WALSH - PORTABLE BLASTING | Minor source | No |
| HAYS BROTHERS PAINTING SERVICES INC | Minor source | No |
| HAYS BROTHERS PAINTING SVC INC | Minor source | No |
| HCP CONSTRUCTORS - PORT CRUSHER | Minor source | No |
| HIGH COUNTRY PIPELINE - NORDBERG SCREEN | Minor source | No |
| HIGH DESERT CONSTRUCTION, INC | Minor source | No |
| HILCORP ENERGY - ARROW C-96 (209321) | Minor source | No |
| HILCORP ENERGY - ARROW C-96 (209323-C) | Minor source | No |
| HILCORP ENERGY - ARROW C-96 (209609-C) | Minor source | No |
| HILCORP ENERGY - ARROW VRG 220 SN: 39633 | Minor source | No |
| HILCORP ENERGY - ARROW VRG 330 SN: C-741 | Minor source | No |
| HILCORP ENERGY - ARROW VRG330 SN: 389788 | Minor source | No |
| HILCORP ENERGY - ARROW VRG330 SN: 389791 | Minor source | No |
| HILCORP ENERGY - ARROW VRG330 SN: 400793 | Minor source | No |
| HILCORP ENERGY - ARROW VRG330, SN: P-132 | Minor source | No |
| HILCORP ENERGY - CATERPILLAR G3306 SN:G6 | Minor source | No |
| HILCORP ENERGY - FORD 4.9L I-6, 76045-1 | Minor source | No |
| HILCORP ENERGY - HUBER RADOSEVICH 1-23 | Minor source | No |
| HILCORP ENERGY - PORTABLE ENGINE | Minor source | No |
| HILCORP ENERGY - PORTABLE PUMPING UNIT E | Minor source | No |
| HILCORP ENERGY - PORTABLE WELLHEAD ENGIN | Minor source | No |
| HILCORP ENERGY - PORTABLE WELLHEAD ENGIN | Minor source | No |
| HOCKER CONSTRUCTION | Minor source | No |
| HOLCIM WCR - CS-PORTABLE | Minor source | No |
| HUDICK EXCAVATING - PORTABLE SCREEN | Minor source | No |
| HUERFANO COUNTY GOVERNMENT-PORT EQUIP | Minor source | No |
| HUNTER RIDGE - CDP D04 596 | Minor source | No |
| IHC SCOTT - PORTABLE CEB | Minor source | No |
| IHC SCOTT - PORTABLE CEB - SHOP | Synthetic minor source | No |
| IHC SCOTT - TEMPORARY BATCH PLANT SITE | Minor source | No |
| IHC SCOTT - TEMPORARY BATCH PLANT SITE | Minor source | No |
| INLAND - PORT. CONCRETE BATCH PLANT | Minor source | No |
| INOVANT - SEE 035/0412 | Minor source | No |
| INTERSTATE HIGHWAY CONST- GEN 72-34 | Minor source | No |
| IRVING F JENSEN CO INC DBA CASTLE ROCK C | Synthetic minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.